Catechu-brown sulfur dye.



.taining imst one nitru group}.

mgammm.

N0 Drawing.

To all whom ('15 may concern f Be it known th at We, 5053? FLACHSLAEIT" DER and KARL PAUL GM a1, residing); at Elberfeld, and MAX Em residing at Vehwinkel, near Elbrfeid, Germany, doctors of pmlosophy, chemls'ts, cluzens 01' the German 0 the mammals-hum and pmduciion' nfnew and val able brown sulfur 'ccrlors which are sbtuined by treating with alkali poiyszflfidspyrimidin compounds cont Lning the radical:

with a free bnndl shown in n iace'li (in which R stands for :1 vaphthaiene ring @011- Qhe Yeaction can be carried. om; wizh 'the addirim of copper or a copper command.

The new rlyes are afmr 561115; firiecl pulverizerl dark powders saiubie in a soiution of sodium s'uifid general with a redbrown coloration and scarcely solubie incencentmted stfifuric acid v min yel iowi brown coloration; The} dye cation in c: chm-brown sharks distinguishefi by Easiness ts light,

In order to illustrate file new pY-3CSS mare fully the following example is giwza. he

1 "parts being by weight :-25Gv parts of crystallized smiium sulfid, partso'f sulfur, 7 parts 6i CQSQ 25.8 pfrcts din having most pr formula:

dinitropymmi- ,fxy the following 2 water are hem:- z'atuzvs 091mg gradual raisecl and the heating s then continued for 6 Sta huurs at from 20* C. The meit is powdered and than mady for use. The dyestui i is a ark powder soluble, in a sofiium 51113 .1; iion with a 'ceadish-brown cc'ierationu scarcel 5501111716 in conaentrated su acid wifih a yellowish- 2.10m and {Eyes comm in 5131's s5; to iin'ht L i quantity sodium as Wei as the emperm uon 0f the reaction can M 1 Wide limits.

Simih '3 estufis are sbtainefi. by using other 01 fine acme meinuisnei products, 5110? mononfimpyaimidi22 nitromeit ayipyrimi (1111, etc.

We shim:

l. The here describeri new sulfur dms being suifur-containing z-arivatives of p573.- Imdm ccmpmm ls mmammg the radical:

.01 V 11 I Q I l Min a 1113?, ml r3510 ill piaca X, in Win 1 fi LO}. z; ghtuaiene mng cantammg at last one :11. V11 which dyes ajiier Ewing" m3, puh'eyized A sill iion 01 sodium Colem- 0051c ted a yel mmm color *ani'ed coitus.

being;

NO: NO;

, is after being, dried and puivmzed 20%? dark powder soluble in a sodium sulfid solutlon with a reddish-brown coloration and scribing Witnesses.

scarcely solublein conentrated sulfuric acid JQSEPH ELAGHSLAENDER. [L..s.] with a yellowish-brown coloration; dyeing I KARL PAUL GRZLERT. [1 8-] set our hands in the presence of two sub- 5 unmordanted cotton in pure oatechwbrown MAX BUM, [1,. 8-]

shades fast to fight substantially as de- Witnesses: scribed. HELEN Nirvana; 7 In testimony whereof we have hereunto ALBERT NmR. 

